SEATTLE – The driver who plowed into three people at Pike Place Market after admittedly smoking synthetic pot this past week is a "da** fool" who almost killed his parents, says the son of a married couple hurt in the crash.

"It makes me sick to my stomach," says Corbin Braymer. He says it will be a long time before his father will even be able to walk again.

Police say the driver, 39-year-old Travis Lipski, admitted smoking K-2 – a chemically-infused herb sold at head and smoke shops – and then got behind the wheel of his Subaru in downtown Seattle on Thursday. (In August we reported on a teen who was taken to Salem Hospital after hallucinating and being unable to breathe after smoking a similar synthetic substance. A pharmacist at Salem Hospital, John McNulty, told us there is no proof the product causes serious adverse effects; however, someone who smokes it could have an allergic reaction to the herbs or react to chemicals laced on the product.)

In Lipski's case, he told police he blacked out. And what happened next was total mayhem.

Investigators said Lipski's Subaru went out of control on Stewart Street, sideswiping a parked car near Second Avenue.